[time-nuts] eBay GPS antenna test.

Bob kb8tq kb8tq at n1k.org
Sat Feb 17 17:19:38 EST 2018


I think you probably will have to move up to around $500 or so (and 
still shop pretty hard) to find a Zephyr Geodetic 2 in excellent condition. 
A Novatel 703 Pinwheel would also be on the list of things to watch for. 

If you find a proper (L1 / L2 / L5 ) GNSS receiver with a pps out in working 
shape for $500, go for it. They tend to be quite a bit above that price. Most
of what is in the $400 to $1000 range are L1 / L2 GPS only devices. Even
with them, finding one that will do timing is a bit tough. 


> On Feb 17, 2018, at 3:07 PM, Trevor N. <qb4 at comcast.net> wrote:
> It's still extremely rare to see a low-priced used triple-frequency
> antenna on ebay. For less than US$300 I've only spotted extremely
> beat-up Zephyr Geodetic Model 2s and a few Leica AX1203+ GNSS (only
> the "+GNSS" model is triple-frequency) (there is one up right now).
>  I've seen at least one Zephyr 2 listing that had a picture of a
> Zephyr 1 attached (look for the bigger bump in the top center on the
> model 2).
> I have yet to see a triple-frequency receiver for under $500....
> John Green wpxs472 at gmail.com wrote:
>> Just so people don’t get to down on eBay antennas:
>> I have gotten some deals on eBay I just couldn't have gotten elsewhere.
>> That is a nice looking antenna. A bit pricey for my budget. I thought just
>> north of $100 for a used Leica choke ring job was about it. The Trimble
>> antenna I got recently had issues, so I got it cheap and fixed the
>> mechanical problems. I think I have one of those HP timing antennas I have
>> heard mentioned here. I need to dig it up. I think I also have a PC Tel
>> model around somewhere. I still haven't gotten the top off that Chinese
>> made one that bit the dust at 12 volts. I need to get it apart somehow. I
>> think it can probably be repaired. I can at least let the seller know what
>> went bad.
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